diff --git a/lib/Makefile b/lib/Makefile
index ab8cc65ba56379fa1e860b4647c0d4b435464579..b54518d9afe882d41ad94e84cfb0844f8c02a51d 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -368,7 +368,8 @@ c_lib_objs := \
 	mb_mgr_snow3g_submit_flush_aarch64_sve256.o \
 	snow3g_aarch64_sve256.o \
 	cipher_suite_id.o \
-	ooo_mgr_reset.o
+	ooo_mgr_reset.o \
+	hmac_ipad_opad_aarch64.o
 asm_generic_lib_objs := \
 	lookup_16x8bit_neon.o \
 	snow3g_impl_aarch64_neon.o \
diff --git a/lib/aarch64/hmac_ipad_opad_aarch64.c b/lib/aarch64/hmac_ipad_opad_aarch64.c
new file mode 100644
index 0000000000000000000000000000000000000000..545526c6c5dd34ef5fe7a9536f5fb736cb3f175d
--- /dev/null
+++ b/lib/aarch64/hmac_ipad_opad_aarch64.c
@@ -0,0 +1,48 @@
+/**********************************************************************
+  Copyright(c) 2024 Arm Corporation All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+    * Neither the name of Arm Corporation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**********************************************************************/
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <ipsec-mb.h>
+
+IMB_DLL_EXPORT
+__attribute((noreturn)) void
+imb_hmac_ipad_opad(IMB_MGR *mb_mgr, const IMB_HASH_ALG sha_type,
+                   const void *pkey, const size_t key_len,
+                   void *ipad_hash, void *opad_hash)
+{
+        /*
+        * This method isn't supported on AArch64. However, it is stubbed to
+        * ensure ABI compatibility with the x86_64 ipsec-mb library.
+        *
+        * As this should never be called, it crashes.
+        */
+        fprintf(stderr, "imb_hac_ipad_opad() is unimplemented for AArch64.\n");
+        abort();
+}